Tape backing substrate

Details Tape backing substrate Tape backing substrate

1988-09-20

1989-06-06

McCamish, Marion E.

Stock material or miscellaneous articles

Structurally defined web or sheet

Including variation in thickness

264238, 264500, 427411, 427412, 427413, 428171, 428284, 428286, 428290, 428343, 428354, 428356, B32B 514

Patent

active

048370703

ABSTRACT:
There is disclosed a cloth-like tape substrate. The substrate is made from an essentially unbonded cellulose web having a breaking length between about 0.71 km and 2.66 km which is saturated with a soft rubber-like polymer, coated with a low stiffness polymer, and then embossed. The unbonded web is formed from at least 25% by weight of pulp having R.sub.10 values greater than 94%. The soft rubber-like polymer has a glass-transition temperature between -50.degree. C. and 0.degree. C. and the low stiffness polymer coating has a tensile modulus less than 1,000 MPa.

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patent: 4693920 (1987-09-01), Agarwal et al.
Cellulose Chemistry and its Applications, T. P. Nevell and S. Haig Zeronian (editors), John Wiley & Sons, New York, Chapter 1.

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